Cavity Closers

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Thermoloc Platinum +

Cavity closers for eliminating damp and cold bridging around doors, windows and sills.


  • To close the cavity at external doors, window jambs and sills
  • To provide thermal insulation and prevent 'cold bridging'
  • To provide a DPC at external doors, window jambs or sills
  • Suitable for cavities up to 150mm

Features and benefits

  • Effective DPC and thermal barrier between frame, inner and outer wall leaf
  • Thermal conductivity of 0.031W/m²k
  • Exceeds the minimum thermal resistance path of 0.45m2 K/W stipulated in accredited construction details
  • Rigid profile extrusion allows second fix
  • Durable and resistant to decay
  • Simple on-site trimming to cope with 'rogue' cavity widths
  • Global warming potential of less than
  • 5
  • Ozone depletion potential of zero
  • Available fully rebated - Check reveal (single flange)
  • Quality

    • Manufactured to BS EN ISO 9001 and BS EN ISO 14001
    • Complies with Building Regulation Approved Documents C, L1 & L2
    • Satisfies BRE document 'Thermal insulation: avoiding risks'
    • Meets all relevant British Standards
    • Satisfies NHBC standards

    Material and colour choice

    • Rigid profile extruded in UPVC
    • Platinum expanded Polystyrene insulation 0.031W/mk
    • Multi 100mm, Multi 100mm CR and fixed cavities
    • 2.4m lengths
    Length2.4 mtr
    TypeCavity Closers

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